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diff --git a/src/libparser/validator.h b/src/libparser/validator.h
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+/***************************************************************************
+ * Copyright (C) 2014 by Renaud Guezennec                                   *
+ * https://rolisteam.org/contact                      *
+ *                                                                          *
+ *  This file is part of DiceParser                                         *
+ *                                                                          *
+ * DiceParser is free software; you can redistribute it and/or modify       *
+ * it under the terms of the GNU General Public License as published by     *
+ * the Free Software Foundation; either version 2 of the License, or        *
+ * (at your option) any later version.                                      *
+ *                                                                          *
+ * This program is distributed in the hope that it will be useful,          *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
+ * GNU General Public License for more details.                             *
+ *                                                                          *
+ * You should have received a copy of the GNU General Public License        *
+ * along with this program; if not, write to the                            *
+ * Free Software Foundation, Inc.,                                          *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.                 *
+ ***************************************************************************/
+#ifndef VALIDATOR_H
+#define VALIDATOR_H
+
+#include <diceparser/diceparserhelper.h>
+
+#include "die.h"
+#include <QString>
+#include <Qt>
+#include <set>
+/**
+ * @brief The Validator class is an abstract class for checking the validity of dice for some
+ * operator.
+ */
+// template <Dice::ConditionType C>
+class Validator
+{
+public:
+    /**
+     * @brief Validator
+     */
+    Validator();
+    /**
+     * @brief ~Validator
+     */
+    virtual ~Validator();
+    /**
+     * @brief hasValid
+     * @param b
+     * @param recursive
+     * @param unlight
+     * @return
+     */
+    virtual qint64 hasValid(Die* b, bool recursive, bool unlight= false) const= 0;
+    /**
+     * @brief toString
+     * @return
+     */
+    virtual QString toString()= 0;
+    /**
+     * @brief getValidRangeSize
+     * @param faces
+     * @return
+     */
+    virtual Dice::CONDITION_STATE isValidRangeSize(const std::pair<qint64, qint64>& range) const= 0;
+    /**
+     * @brief getCopy
+     * @return return  a copy of this validator
+     */
+    virtual Validator* getCopy() const= 0;
+    /**
+     * @brief getPossibleValues
+     * @param range
+     * @return
+     */
+    virtual const std::set<qint64>& getPossibleValues(const std::pair<qint64, qint64>& range);
+    /**
+     * @brief validResult
+     * @param b
+     * @param recursive
+     * @param unlight
+     * @return
+     */
+    template <typename Functor>
+    qint64 validResult(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+
+    Dice::ConditionType getConditionType() const;
+    void setConditionType(const Dice::ConditionType& conditionType);
+
+protected:
+    template <typename Functor>
+    qint64 onEach(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+    template <typename Functor>
+    qint64 onEachValue(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+    template <typename Functor>
+    qint64 oneOfThem(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+    template <typename Functor>
+    qint64 allOfThem(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+    template <typename Functor>
+    qint64 onScalar(const std::vector<Die*>& b, bool recursive, bool unlight, Functor functor) const;
+
+protected:
+    std::set<qint64> m_values;
+    Dice::ConditionType m_conditionType= Dice::OnEach;
+};
+
+#endif // VALIDATOR_H